Geographic Coordinate System Name: GCS_North_American_1983

This dataset is a qualitative assessment of geothermal potential for the U.S. using
enhanced geothermal systems (EGS) based on the levelized cost of electricity, with
Class 1 being most favorable and Class 5 being least favorable. This dataset does
not include shallow EGS resources located near hydrothermal sites or the U.S. Geological
Survey assessment of undiscovered hydrothermal resources. The source data for deep
EGS temperature at depth from 3 km to 10 km were provided by the Southern Methodist
University Geothermal Laboratory, and the analyses for regions with temperatures ≥150°C
were performed by NREL. Class 999 regions have temperatures less than 150°C at a 10-km
depth and were not assessed for deep EGS potential. Temperature-at-depth data for
deep EGS in Alaska and Hawaii are not available.

Texas Geopressured Geothermal Resource Estimate

Geopressured geothermal reservoirs are characterized by high temperatures and high
pressures with correspondingly large quantities of dissolved methane. Due to these
characteristics, the reservoirs provide two sources of energy: chemical energy from
the recovered methane and thermal energy from the recovered fluid at temperatures
high enough to operate a binary power plant for electricity production. Formations
with the greatest potential for recoverable energy are located in the Gulf Coast region
of Texas and Louisiana, where significantly overpressured and hot formations are abundant.
These data files were generated to develop the thermal and methane resource estimate
for five formations in Texas: the upper and lower Claiborne, the lower Wilcox, the
lower Frio, and the Vicksburg-Jackson area.